Ảnh hưởng của việc bổ sung bột lá nghệ (<i>Curcuma Longa</i>) đến sinh trưởng và khả năng phòng bệnh cầu trùng trên gà thịt

The study was conducted to evaluate the effects of turmeric leaf powder supplementation on the growth performance and disease resistance of broiler chickens. A total of 117 chickens were evenly divided into three treatment groups (T1: no turmeric leaf powder; T2: supplemented with 1% turmeric leaf powder; T3: supplemented with 1,5% turmeric leaf powder) and reared until 15 weeks of age. The results showed that turmeric leaf powder supplementation did not affect the survival rate of broilers (100%). Chickens supplemented with turmeric leaf powder exhibited a higher growth rate at 15 weeks of age compared to those not receiving the supplement. The body weights at 15 weeks of age for T1, T2 (1%), and T3 (1,5%) were 2218,55 g, 2376,34 g, and 2395,06 g per bird, respectively (P<0,05). The average feed conversion ratios (FCR) for T1, T2 and T3 were 2,92; 2,69 and 2,64, respectively (P<0,05). Additionally, chickens in the turmeric-supplemented groups were not infected with coccidiosis and exhibited better growth performance compared to the control group. Therefore, it is recommended to supplement turmeric leaf powder at levels of 1%–1,5% in broiler production to not only maintain good growth but also prevent coccidiosis in chickens.